DE3881222D1 - SEMICONDUCTOR MEMORY WITH OPTIONAL ACCESS THROUGH TWO SEPARATE INPUTS / OUTPUTS. - Google Patents
SEMICONDUCTOR MEMORY WITH OPTIONAL ACCESS THROUGH TWO SEPARATE INPUTS / OUTPUTS.Info
- Publication number
- DE3881222D1 DE3881222D1 DE8888100197T DE3881222T DE3881222D1 DE 3881222 D1 DE3881222 D1 DE 3881222D1 DE 8888100197 T DE8888100197 T DE 8888100197T DE 3881222 T DE3881222 T DE 3881222T DE 3881222 D1 DE3881222 D1 DE 3881222D1
- Authority
- DE
- Germany
- Prior art keywords
- semiconductor memory
- outputs
- operated
- output
- data input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
- G11C8/16—Multiple access memory array, e.g. addressing one storage element via at least two independent addressing line groups
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/41—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/412—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using field-effect transistors only
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Static Random-Access Memory (AREA)
- Semiconductor Memories (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
The dual port random access semiconductor memory has a separate address control (8,10;9,11) and a separate read/write path (12,13) for each data input/ output (DEA1,DEA2) and a clock circuit (20) allowing the address controls (8,10;9,11) and the bias circuits (16,17) for the data lines (L1,L1';L2,L2') associated with the read/ write paths (12,13) to be operated in alternation. During one clock phase the address control (8,10) of the first data input/output (DEA1) and the bias circuit (17) for the other data lines (L2,L2') are operated and during the second clock phase the address control (9,11) for the second data input/output (DEA2) and the bias circuit (16) for the first data lines (L1,L1') are operated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8888100197T DE3881222D1 (en) | 1987-01-23 | 1988-01-08 | SEMICONDUCTOR MEMORY WITH OPTIONAL ACCESS THROUGH TWO SEPARATE INPUTS / OUTPUTS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3701976 | 1987-01-23 | ||
DE8888100197T DE3881222D1 (en) | 1987-01-23 | 1988-01-08 | SEMICONDUCTOR MEMORY WITH OPTIONAL ACCESS THROUGH TWO SEPARATE INPUTS / OUTPUTS. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3881222D1 true DE3881222D1 (en) | 1993-07-01 |
Family
ID=6319407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8888100197T Expired - Fee Related DE3881222D1 (en) | 1987-01-23 | 1988-01-08 | SEMICONDUCTOR MEMORY WITH OPTIONAL ACCESS THROUGH TWO SEPARATE INPUTS / OUTPUTS. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4860263A (en) |
EP (1) | EP0275884B1 (en) |
JP (1) | JPS63188887A (en) |
AT (1) | ATE89946T1 (en) |
DE (1) | DE3881222D1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3835116A1 (en) * | 1988-10-14 | 1990-04-19 | Siemens Ag | ADDRESS AMPLIFIER CIRCUIT WITH SELF-LOCKING AND SECURING AGAINST MULTIPLE ADDRESSING FOR USE IN STATIC GAAS RAMS |
US4975872A (en) * | 1988-11-17 | 1990-12-04 | Matsushita Electric Industrial Co., Ltd. | Dual port memory device with tag bit marking |
FR2639461A1 (en) * | 1988-11-18 | 1990-05-25 | Labo Electronique Physique | BIDIMENSIONAL ARRANGEMENT OF MEMORY POINTS AND STRUCTURE OF NEURON NETWORKS USING SUCH ARRANGEMENT |
US5014247A (en) * | 1988-12-19 | 1991-05-07 | Advanced Micro Devices, Inc. | System for accessing the same memory location by two different devices |
JPH02177195A (en) * | 1988-12-28 | 1990-07-10 | Fujitsu Ltd | Two-port static ram |
US5210701A (en) * | 1989-05-15 | 1993-05-11 | Cascade Design Automation Corporation | Apparatus and method for designing integrated circuit modules |
US5235543A (en) * | 1989-12-29 | 1993-08-10 | Intel Corporation | Dual port static memory with one cycle read-modify-write |
JPH03224197A (en) * | 1990-01-30 | 1991-10-03 | Toshiba Corp | Multiport ram and information processor |
US5003509A (en) * | 1990-03-27 | 1991-03-26 | National Semiconductor Corp. | Multi-port, bipolar-CMOS memory cell |
JP2965043B2 (en) * | 1990-04-10 | 1999-10-18 | 三菱電機株式会社 | Dual port memory |
US5465344A (en) * | 1990-08-20 | 1995-11-07 | Matsushita Electric Industrial Co., Ltd. | Microprocessor with dual-port cache memory for reducing penalty of consecutive memory address accesses |
JP2673390B2 (en) * | 1991-03-13 | 1997-11-05 | 三菱電機株式会社 | Multi-port memory |
US5371877A (en) * | 1991-12-31 | 1994-12-06 | Apple Computer, Inc. | Apparatus for alternatively accessing single port random access memories to implement dual port first-in first-out memory |
US5504503A (en) * | 1993-12-03 | 1996-04-02 | Lsi Logic Corporation | High speed signal conversion method and device |
US5581720A (en) * | 1994-04-15 | 1996-12-03 | David Sarnoff Research Center, Inc. | Apparatus and method for updating information in a microcode instruction |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56165983A (en) * | 1980-05-26 | 1981-12-19 | Toshiba Corp | Semiconductor storage device |
US4395765A (en) * | 1981-04-23 | 1983-07-26 | Bell Telephone Laboratories, Incorporated | Multiport memory array |
US4541076A (en) * | 1982-05-13 | 1985-09-10 | Storage Technology Corporation | Dual port CMOS random access memory |
JPS59198584A (en) * | 1983-04-22 | 1984-11-10 | Nec Corp | Multiaccess storage device |
US4520465A (en) * | 1983-05-05 | 1985-05-28 | Motorola, Inc. | Method and apparatus for selectively precharging column lines of a memory |
JPS6072020A (en) * | 1983-09-29 | 1985-04-24 | Nec Corp | Dual port memory circuit |
JPS60140924A (en) * | 1983-12-27 | 1985-07-25 | Nec Corp | Semiconductor circuit |
US4623990A (en) * | 1984-10-31 | 1986-11-18 | Advanced Micro Devices, Inc. | Dual-port read/write RAM with single array |
-
1988
- 1988-01-08 EP EP88100197A patent/EP0275884B1/en not_active Expired - Lifetime
- 1988-01-08 AT AT88100197T patent/ATE89946T1/en not_active IP Right Cessation
- 1988-01-08 DE DE8888100197T patent/DE3881222D1/en not_active Expired - Fee Related
- 1988-01-20 JP JP63011828A patent/JPS63188887A/en active Pending
- 1988-01-25 US US07/147,451 patent/US4860263A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0275884A2 (en) | 1988-07-27 |
US4860263A (en) | 1989-08-22 |
EP0275884B1 (en) | 1993-05-26 |
EP0275884A3 (en) | 1990-12-05 |
ATE89946T1 (en) | 1993-06-15 |
JPS63188887A (en) | 1988-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |